| 摘要 |
A seal assembly (10′; 30′) comprises a plurality of deformable annular seals (10; 30), each having an annular recess (17) at one end, which are inserted one by one in a relaxed condition in coaxial stacked relation into an annular bore (54) and then compressed axially one by one so that an insert body (16; 32) enters into the recess in each seal, radially energising it. The insert body may comprise an opposite end (16) of the adjacent seal, or a body (32) of fluid or gel. The inner wall of each seal comprises a sealing surface and at least one sealing bead protruding radially inwardly from the sealing surface; the sealing surface limits the depth to which the bead can penetrate the casing of the cable. |
